Massive Spin-2 fields of Geometric Origin in Curved Spacetimes

Details Massive Spin-2 fields of Geometric Origin in Curved Spacetimes Massive Spin-2 fields of Geometric Origin in Curved Spacetimes

2008-11-23

arxiv.org/abs/0811.3781v2

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, Clarifying remarks added in section 5, minor changes, version to be published in the Phys. Rev. D

Scientific paper

We study the consistency of a model which includes torsion as well as the metric as dynamical fields and has massive spin-2 particle in its spectrum. The massive spin-2 mode resides in the torsion, rather than in the metric. It is known that this model is tachyon- and ghost-free in Minkowski background. We show that this property remains valid and no other pathologies emerge in de Sitter and anti-de Sitter backgrounds, with some of our results extending to arbirary Einstein space backgrounds. This suggests that the model is consistent, at least at the classical level, unlike, e.g., the Fierz--Pauli theory.

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